Martina Bigatti; Alberto Dal Corso; Sara Vanetti; Samuele Cazzamalli; Ulrike Rieder; Jörg Scheuermann; Dario Neri; Filippo Sladojevich
ChemMedChem, 2017, 12(21), 1748-1752
https://doi.org/10.1002/cmdc.201700569

Abstract

The screening of encoded self-assembling chemical libraries allows the identification of fragment pairs that bind to adjacent pockets on target proteins of interest. For practical applications, it is necessary to link these ligand pairs into discrete organic molecules, devoid of any nucleic acid component. Here we describe the discovery of a synergistic binding pair for acid alpha-1 glycoprotein and a chemical strategy for the identification of optimal linkers, connecting the two fragments. The procedure yielded a set of small organic ligands, the best of which exhibited a dissociation constant of 9.9 nM, as measured in solution by fluorescence polarization